CN105790592A - High-performance miniaturized altimeter multi-output DC/DC power source module - Google Patents
High-performance miniaturized altimeter multi-output DC/DC power source module Download PDFInfo
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- CN105790592A CN105790592A CN201610319870.4A CN201610319870A CN105790592A CN 105790592 A CN105790592 A CN 105790592A CN 201610319870 A CN201610319870 A CN 201610319870A CN 105790592 A CN105790592 A CN 105790592A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a high-performance miniaturized altimeter multi-output DC/DC power source module. The power source module comprises an input filtering circuit, a power source control circuit, a voltage conversion circuit, an output rectification and filtering circuit, an output voltage stabilization circuit, a feedback circuit, an isolation circuit, a compensation circuit and a protection circuit; voltage ranging from 18Vdc to 36Vdc is inputted into the power source module and passes through the input filtering circuit, the power source control circuit, the voltage conversion circuit, the output rectification and filtering circuit, the feedback circuit, the isolation circuit, the compensation circuit and the protection circuit, and as a result, three paths of voltage are outputted through the output voltage stabilization circuit; LTCC technology is adopted to encapsulate the power source module; and a highly integrated PWM power source control chip is adopted as the power source control circuit. With the above technical schemes of the invention adopted, the power source module has the advantages of small size, high reliability and light weight.
Description
Technical field
The present invention relates to a kind of power module, especially a kind of high performance mini altimeter multiple-channel output DC/DC power module.
Background technology
Altimeter is a kind of measurement and the instruction aircraft instrument from height above sea level face or ground vertical dimension, divides from its operation principle, can be divided into pressure altimeter and radio altimeter two kinds.According to atmospheric composition and feature, the air pressure of known air reduces along with the increase of height, pressure altimeter is through measuring air pressure and indirectly measures the flying height (from height above sea level face height) of aircraft, is now widely used in all kinds of aircraft.Now the application of aircraft is required more and more higher (miniaturization, portable, multi-functional, digitized and high reliability, high-performance aspect), the function realized gets more and more, increase function to mean to increase more device or increase function and the performance of device, so certainly will causing the increase of overall plan volume, weight, how reducing these is the work studied for a long period of time.
For airborne power supply, weight and volume requires all more and more higher, along with the development of Switching Power Supply, small size, high power density increasingly become pursuing a goal and developing direction of Switching Power Supply, and various reduction power volumes, the technology improving power density are arisen at the historic moment.For insulating power supply, the technology that can improve accordingly is also a lot, for instance transformer technology, improves the characteristic of magnetic core magnetic powder by improving the ratio of the various material compositions in magnetic core magnetic powder, thus reducing transformer size, Transformer Winding forwards to from skeleton and makes transformer size less printed board；The new technique of topological structure, makes loss less, in hgher efficiency；The Highgrade integration of control circuit makes peripheral circuit simpler, and external devices is less, etc..These methods all make the size of power supply more and more less, and weight is more and more lighter.
What the Switching Power Supply of traditional comparative maturity adopted is multilayered printed plate technique, by welding or other modes, whole components and parts (active and passive device) are placed on the printing board surface of various sheet material, this mode easily, can change components and parts according to demand in design and debugging process.Due to device all on the surface of printed board, make the size of whole power supply can not reduce more.
It addition, in traditional altimeter application, power supply uses combination that single channel exports to realize the power demands of multiple power supplies, and each power supply is likely to reuse the device of identical function, which not only adds number of devices and weight, and too increases volume.
Then how allowing the volume weight less of DC/DC power module when ensureing power supply function performance is gentlier a research direction.LTCC low-temperature co-fired ceramic substrate and miniaturization stack technology greatly reduce by the volume of power module.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing defect, it is provided that a kind of high performance mini altimeter multiple-channel output DC/DC power module, adopts the combination of LTCC technology and highly integrated power supply control chip to make power volume less, and weight is lighter.
In order to solve above-mentioned technical problem, the invention provides following technical scheme:
One high performance mini altimeter multiple-channel output DC/DC power module of the present invention; power module includes input filter circuit, power control circuit, voltage conversion circuit, output rectifier and filter, output voltage stabilizing circuit, feedback circuit, isolation circuit, compensates circuit and protection circuit; power module input voltage 18Vdc～36Vdc; through input filter circuit, power control circuit, voltage conversion circuit, output rectifier and filter, feedback circuit, isolation circuit, compensate circuit and protection circuit, divide three road output voltages by output voltage stabilizing circuit；Power module encapsulation adopts LTCC technology；Power control circuit adopts highly integrated PWM power supply control chip.
Further, output voltage stabilizing circuit includes conversion voltage transformer, sampling feedback circuit and LDO, conversion voltage transformer realizes three road output voltage conversion, and a road main road exports sampled feedback circuit and carries out voltage stabilizing adjustment, and two-way bypass output use LDO respectively increases voltage order one conversion and carrys out voltage stabilizing.
Further, there is no centre tap between the output of two-way bypass.
Further, power module adopts power metal shell, and shell adopts 10# Steel material.
Beneficial effects of the present invention: adopting the combination of LTCC technology and highly integrated power supply control chip to make power volume less, weight is lighter.Highly integrated power supply control chip makes the peripheral circuit of whole power module simple, and components and parts are less, it is necessary to the place of adjustment is also less；LTCC technology is by various passive devices, in the device embedment multilayer ceramic substrates such as electric capacity, resistance, impedance transducer, wave filter, form three-dimensional space and non-interfering highly integrated circuit, it is coated with manufacturing process sintering with run-in index printing, form integrated form ceramic component, further by circuit miniaturization and high integration, can decreasing the quantity of surface mounted passives, the number of interfaces of the different materials that attachment and electric interconnection cause is greatly decreased.Thus, also make packaging density and reliability increase substantially；Decrease solder joint, add credibility；Decrease the impact of corrosion and humidity；It is high temperature resistant, it is good to dispel the heat, and the heat radiation of power device is had very big help.Owing to being multiple-channel output DC/DC power module, and required precision for power supply is significantly high, in the present invention, voltage transformation only use a conversion voltage transformer complete the conversion of all voltage, in order to ensure that the precision of voltage regulation of every road output voltage is 1%, wherein a road is output main road, adopts and compares feedback circuit, additionally two-way output uses LDO to its voltage stabilizing, to reach to reduce the purpose of volume.
Accompanying drawing explanation
Fig. 1 is the theory diagram of a kind of high performance mini altimeter multiple-channel output DC/DC power module；
Fig. 2 is the output voltage stabilizing circuit block diagram of a kind of high performance mini altimeter multiple-channel output DC/DC power module；
Fig. 3 is the encapsulation general picture figure of a kind of high performance mini altimeter multiple-channel output DC/DC power module.
Detailed description of the invention
Embodiment cited by the present invention; it is only intended to help and understands the present invention; should not be construed as limiting the scope of the present invention; for those skilled in the art; without departing from the inventive concept of the premise; the present invention can also being improved and modify, these improve and modify in the scope also falling into the claims in the present invention protection.
As it is shown in figure 1, be the theory diagram of a kind of high performance mini altimeter multiple-channel output DC/DC power module.This power module includes input filter circuit 1, power control circuit 2, voltage conversion circuit 3, output rectifier and filter 4, output voltage stabilizing circuit 5, feedback circuit 6, isolation circuit 7, compensates circuit 8 and protection circuit 9.Protection circuit 9 includes output over-voltage protection, output overcurrent protection, overheat protector, short-circuit protection and input reverse-connection protection.This power module input voltage 28Vdc (scope: 18Vdc～36Vdc); through input filter circuit 1, power control circuit 2, voltage conversion circuit 3, output rectifier and filter 4, feedback circuit 6, isolation circuit 7, compensate circuit 8 and protection circuit 9; three tunnel running voltages are exported :+15V ,-15V and+5V, output is about 28W through output voltage stabilizing circuit 5.
Power control circuit 2 adopts highly integrated PWM power supply control chip, thering is provided corresponding high-frequency switching signal in control chip and be internally integrated switching power tube and internal corresponding control signal, external circuit only has several resistance and several low capacitance electric capacity for regulating the loop compensation of circuit.
For reducing volume weight further, ensureing the high request to output voltage precision simultaneously, adopt a conversion voltage transformer 51 to complete the conversion of multiple-channel output voltage, the mode simultaneously increasing low dropout voltage regulator (LDO) completes.Wherein a road main road is output as the 5V that output electric current is bigger, and voltage regulation way is that sampling feedback circuit 52 carries out voltage stabilizing adjustment；Additionally two-way bypass output 15V and-15V, uses LDO to increase voltage order one conversion respectively and reaches the purpose of voltage stabilizing.Seeing Fig. 2, wherein, 15V and-15V does not have centre tap, therefore the output of this two-way will not produce the change of output voltage along with the increase and decrease of any one road electric current, makes the output stability of this power module and reliability be protected.
As shown in Figure 3, the general picture figure of LTCC technology encapsulation is adopted for a kind of high performance mini altimeter multiple-channel output DC/DC power module, according to design principle, by in the passive device embedment ceramic substrates such as low-capacitance electric capacity, resistance, inductance, other active device, then be placed on ceramic base plate surface such as power supply control chip, voltage conversion chip etc., power conversion transformer then uses high frequency planar transformator mode to be placed on outside ceramic substrate.It is suitable for big electric current and high-temperature stability requirement because of LTCC, there is good temperature characterisitic, such as less thermal coefficient of expansion, the less dielectric constant coefficient of stability, the thermal conductivity of ltcc substrate material is 20 times of organic lamination plate, therefore can simplify thermal design, hence it is evident that improve the life and reliability of circuit.
This power module adopts power metal shell, and selected materials is the 10# steel that mass density is less, and except the thickness at glass insulator place is except 1.5mm, at the bottom of shell and surrounding thickness is 0.5mm.This shell has good heat dispersion, and by the Heat Conduction Material of heat conductivity more than 2.0, heat consumption components and parts are close to tube wall, reaches better radiating effect.
The encapsulation of this power module adopts LTCC low-temperature co-fired ceramic substrate, power metal shell and miniaturization laminated process technology.Power module volume 45mm × 30mm × 8.0mm, weight 50g.By the way so that the volume of the present invention is little, highly reliable, lightweight.
Claims (4)
1. a high performance mini altimeter multiple-channel output DC/DC power module, it is characterized in that: described power module includes input filter circuit (1), power control circuit (2), voltage conversion circuit (3), output rectifier and filter (4), output voltage stabilizing circuit (5), feedback circuit (6), isolation circuit (7), compensate circuit (8) and protection circuit (9), power module input voltage 18Vdc～36Vdc, through input filter circuit (1), power control circuit (2), voltage conversion circuit (3), output rectifier and filter (4), feedback circuit (6), isolation circuit (7), compensate circuit (8) and protection circuit (9), by output voltage stabilizing circuit (5) point three road output voltages；The encapsulation of described power module adopts LTCC technology；Described power control circuit (2) adopts highly integrated PWM power supply control chip.
2. high performance mini altimeter multiple-channel output DC/DC power module according to claim 1, it is characterized in that: described output voltage stabilizing circuit (5) includes conversion voltage transformer (51), sampling feedback circuit (52) and LDO (53), conversion voltage transformer (51) realizes three road output voltage conversion, one road main road exports sampled feedback circuit (52) and carries out voltage stabilizing adjustment, and the output of two-way bypass uses LDO (53) to increase voltage order one respectively and converts voltage stabilizing.
3. high performance mini altimeter multiple-channel output DC/DC power module according to claim 2, it is characterised in that: there is no centre tap between the output of described two-way bypass.
4. high performance mini altimeter multiple-channel output DC/DC power module according to claim 1, it is characterised in that: described power module adopts power metal shell, and shell adopts 10# Steel material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610319870.4A CN105790592A (en) | 2016-05-13 | 2016-05-13 | High-performance miniaturized altimeter multi-output DC/DC power source module |
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| CN201610319870.4A CN105790592A (en) | 2016-05-13 | 2016-05-13 | High-performance miniaturized altimeter multi-output DC/DC power source module |
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| CN105790592A true CN105790592A (en) | 2016-07-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108880195A (en) * | 2018-07-03 | 2018-11-23 | 中国电子科技集团公司第二十四研究所 | Multichannel voltage converter based on integrative packaging |
| CN110492731A (en) * | 2019-09-11 | 2019-11-22 | 成都宏科电子科技有限公司 | A kind of ceramics water type power adapter and manufacturing method |
| CN110932534A (en) * | 2019-11-29 | 2020-03-27 | 中国电子科技集团公司第十三研究所 | Spurious suppression device, frequency source and electronic equipment |
| US20210100128A1 (en) * | 2019-09-26 | 2021-04-01 | Ohio State Innovation Foundation | Low inductance power module with vertical power loop structure and insulated baseplates |
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| US20030193364A1 (en) * | 2002-04-16 | 2003-10-16 | Liu Kwang H. | Biasing system and method for low voltage DC-DC converters with built-in N-FETs |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108880195A (en) * | 2018-07-03 | 2018-11-23 | 中国电子科技集团公司第二十四研究所 | Multichannel voltage converter based on integrative packaging |
| CN110492731A (en) * | 2019-09-11 | 2019-11-22 | 成都宏科电子科技有限公司 | A kind of ceramics water type power adapter and manufacturing method |
| US20210100128A1 (en) * | 2019-09-26 | 2021-04-01 | Ohio State Innovation Foundation | Low inductance power module with vertical power loop structure and insulated baseplates |
| US11758697B2 (en) * | 2019-09-26 | 2023-09-12 | Ohio State Innovation Foundation | Low inductance power module with vertical power loop structure and insulated baseplates |
| US12004331B2 (en) | 2019-09-26 | 2024-06-04 | Ohio State Innovation Foundation | Low inductance power module with vertical power loop structure and insulated baseplates |
| CN110932534A (en) * | 2019-11-29 | 2020-03-27 | 中国电子科技集团公司第十三研究所 | Spurious suppression device, frequency source and electronic equipment |
| CN110932534B (en) * | 2019-11-29 | 2021-06-15 | 中国电子科技集团公司第十三研究所 | Spurious suppression device, frequency source and electronic equipment |
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Application publication date: 20160720 |